NO- 3570 PANDARIDAE — CRESSET 65 



on an average of 2 specimens). Greatest width 3.6 mm (measured 

 at widest part of cephalon). No dorsal plates. Posterior corners of 

 segment 2 produced. Genital segment about as long as wide (1.6 

 by 1.6 mm). Abdomen 1-segmented. Caudal ramus (fig. 339) 

 somewhat rounded with 4 terminal plumose setae and 2 short sub- 

 terminal ones. Inner margin with short hau's. 



Oral area as in female. Appendages of cephalon as in female except 

 for maxilliped. Maxilliped (fig. 340) with tip of claw papillose 

 (fig. 341). Adhesion areas as in figure 340. Adhesive pad of maxil- 

 liped (fig. 342) not pointed as in female but with posterior portion 

 produced as a rounded process with heavy striations as in figure. 



Legs 1-4 biramose with spine and setal formula as follows: 



^^Ol legs legs Ug jt 



exp. end. exp. end. exp. end. exp. end. 



seg 1 1:0 0:0 1:1 0:1 1:1 0:1 IV-3 4 



seg2 IV :3 3 IV:5 7 IV:5 4 



Legs 1 and 2 as in female. Leg 3 ^vith a modification on last endopod 

 segment as in figm-e 343. This is consistent Avith group II males, 

 although this modification is much reduced in this species. Leg 

 4 (fig. 344) mth each ramus 1-segmented but not as reduced as the 

 female. Leg 5 (see fig. 345) a single short seta on margin of genital 

 segment. Leg 6 (see fig. 345) a single short seta near junction of 

 genital segment and abdomen. 



Discussion.— This species has been collected twice from Galeocerdo 

 cuvier. The specimens from Nosy Be were recovered from the nasal 

 passages of the host. Those from Sarasota were not collected by the 

 author, and there is no information as to their location on the host. 



This species may be separated from N. orientalis by the nature of 

 the fourth legs of the females. It seems to be more closely related 

 to N. crypturus but can be separated from it on the basis of the 

 caudal^ rami and by the fact that in A^. crypturus the genital seg- 

 ment is considerably narrowed anteriorly whereas in A^. tigris it is 

 not markedly so. 



The name tigris, from Latin, meaning "tiger," refers to the host, 

 the tiger shark. 



Nesippus vespa Kirtesinghe, 1964 



Figures 346-356 

 Nessipus vespa Kirtesinghe, 1964, p. 91. 



Specimens studied.— Eleven females form Rynchobatus djeddensis 

 (Forskal) from Nosy Be, Madagascar. 



Female.— Body form as in figm-e 346. Total length 3.8 mm (based 

 on an average of 2 spechnens). Greatest width 1.5 mm (measured at 

 widest part of cephalon). Cephalon rounded, slightly wider than 

 long (1.2 by 1.5 mm). Thoracic segments 2 and 3 indistinctly divided 



221-534—67 5 



